KR102517710B1 - Cooling fabric with improved cool feeling and touch, and manufacturing method therefof - Google Patents

Abstract

The present invention relates to a cooling fabric with improved cooling and tactile sensation and a method for manufacturing the same, and in particular, manufacturing a cooling fabric with excellent dyeing characteristics, excellent contact feeling, low wash shrinkage, etc. as well as excellent wash resistance and greatly improved tactile feel. It relates to a method for manufacturing a cooling fabric with improved cooling and tactile sensation, comprising the steps of: a) weaving a fabric using rayon and cotton yarn; b) pre-dyeing the fabric; c) dyeing and drying the fabric; d) mixing water with an aqueous solution of xylitol, an aqueous solution of chitosan, and an emulsion of menthol to obtain a cooling agent; e) obtaining a processing mixture by mixing the cooling processing agent and a silicone softener; f) subjecting the processing mixture to a cold feeling processing on the fabric; characterized in that it comprises a.

Description

Cooling fabric with improved cool feeling and touch, and manufacturing method therefof}

The present invention relates to a cooling fabric with improved cooling and tactile sensation and a method for manufacturing the same, and in particular, manufacturing a cooling fabric with excellent dyeing characteristics, excellent contact feeling, low wash shrinkage, etc. as well as excellent wash resistance and greatly improved tactile feel. It relates to a method for manufacturing a cooling fabric with improved cooling and tactile sensation.

According to the American Meteorological Society (AMS) and the National Oceanic and Atmospheric Administration (NOAA), global greenhouse gas emissions reached the highest level in 2017. The temperature has been high enough to be within three fingers since observation, and the sea level has been at a record high for six consecutive years.

The importance of energy saving according to measures to prevent global warming has emerged worldwide, and in Korea, a “Cool Dress Campaign” is being developed that recommends light clothing in summer.

Reflecting this atmosphere, cooling clothing for the cool-looking campaign in business working environments or daily life is being released.

With forecasts of much hotter heat than in previous years, the fashion industry as a whole, led by the outdoor industry, is concentrating on releasing “cooling items” to cool off the heat.

Most of the recently released products, mainly from chemical fiber companies, are materials with improved sweat absorption and quick-drying through a multi-layer structure of natural and synthetic fibers.

However, in these developed materials, deformation of the cross section of the cross-section of the cold-feeling deformed cross-section yarn occurs during yarn processing, resulting in a deterioration in the sweat perspiration and quick-drying function. Sensitivity can be expressed, but semi-permanent cooling function is not expressed, so it can be used only as a marketing concept.

KR10-2098721B1 (2020.04.02) KR10-2018-0061747A (2018.06.08) KR10-1605119B1 (2016.03.15)

The present invention to solve these conventional problems has semi-permanent initial coolness and sustained coolness, excellent dyeing characteristics and contact coolness, and excellent washing resistance such as low wash shrinkage rate, as well as greatly improved coolness An object of the present invention is to provide a method for manufacturing a cooling fabric with improved cooling sensation and touch that can manufacture fabric.

The present invention for achieving the above object,

a) weaving a fabric using rayon and cotton yarn;

b) pre-dyeing the fabric;

c) dyeing and drying the fabric;

d) mixing water with an aqueous solution of xylitol, an aqueous solution of chitosan, and an emulsion of menthol to obtain a cooling agent;

e) obtaining a processing mixture by mixing the cooling processing agent and a silicone softener;

It provides a method for manufacturing a cooling fabric with improved cooling sensation and tactile sensation, characterized in that it includes;

In step a), it is preferable to weave fabric by mixing 30 to 50 parts by weight of cotton yarn with 100 parts by weight of rayon.

In step a), fabric is woven using rayon, cotton yarn, and spandex yarn, and 30 to 50 parts by weight of cotton yarn and 5 to 10 parts by weight of spandex yarn are mixed with 100 parts by weight of rayon.

In step a), it is preferable to weave the fabric by knitting so that the cotton yarn forms the surface texture and the rayon forms the back surface texture.

The cooling agent in step d) is preferably prepared by mixing 45 to 50 parts by weight of an aqueous solution of xylitol, 3 to 5 parts by weight of an aqueous solution of chitosan, and 2 to 3 parts by weight of an emulsion of menthol with respect to 100 parts by weight of water.

In addition, it is preferable to mix 10 to 15 parts by weight of a cationic binder with respect to 100 parts by weight of water in the cooling agent.

The silicone softener in step e) is made of polyethylene glycol amino polysiloxane, and in step e), 20 to 30 parts by weight of the silicone softener is preferably mixed with 100 parts by weight of the cooling finishing agent to obtain a processing mixture.

In addition, the present invention provides a cooling fabric with improved cooling sensation and tactile sensation, characterized in that it is manufactured by the above manufacturing method.

The manufacturing method of cooling fabric using the cooling processing agent of the present invention has semi-permanent initial cooling and sustained cooling, excellent dyeing characteristics and contact cooling, and excellent washing resistance such as low wash shrinkage, as well as greatly improved tactile feel. There is an effect that can manufacture a cooling fabric.

Hereinafter, a cooling sensation fabric with improved cooling sensation and touch and a method for manufacturing the same according to the present invention will be described in detail.

The manufacturing method of cooling fabric using the cooling processing agent of the present invention largely includes a fabric weaving step, a dyeing pretreatment step, a dyeing step, a cooling processing agent manufacturing step, a processing mixture manufacturing step, and a cooling processing step.

First, the fabric weaving step is a step of weaving or knitting a fabric using rayon and cotton yarn.

When fabric is woven using only rayon, it has excellent cooling properties, but the dyeing properties are not good, such as damage to the fabric during dyeing. good night.

At this time, it is preferable to weave fabric by mixing 30 to 50 parts by weight of cotton yarn with 100 parts by weight of rayon. When cotton yarn is mixed with less than 30 parts by weight, the cooling properties are excellent, but the dyeing properties are not greatly improved, and when cotton yarn is mixed with more than 50 parts by weight, there is a problem that the cooling properties are lowered.

In addition, the method of mixing rayon and cotton yarn is not greatly limited, such as weaving using a composite yarn in which rayon and cotton yarn are plied.

In particular, it is preferable to weave a fabric by knitting cotton yarn to form a surface texture and rayon to form a back surface texture. Since the back side of the fabric is made of rayon, it has excellent coolness, and the surface structure is made of cotton yarn, which has the advantage of minimizing tearing or wrinkle formation during post-processing such as dyeing. It is preferable that the number of links of the cotton yarn is 5 to 7, and if the number of links is less than 5, the bulkiness of the cotton yarn is large and heat retention is given, making it unsuitable as a cool material. Or, there is a problem in that the knitting property is deteriorated due to the occurrence of a snail phenomenon during knitting.

As a method of knitting the fabric so that cotton yarn forms the surface structure and rayon forms the back surface structure, rayon and cotton yarn are put into the same yarn, separated by position (cotton yarn on the upper side, rayon on the lower side), and the same knitting and the same knitting can be knitted to have

Next, the pre-dyeing treatment step is a step of bleaching, acid-treating, and neutralizing the fabric before dyeing in order to improve excellent color development and dyeing uniformity during dyeing.

The pre-dyeing step includes a bleaching step of bleaching by adding hydrogen peroxide, caustic soda, a stabilizer and a refining agent, an acid treatment step of adjusting the pH of the fabric by adding glacial acetic acid, and a neutralization step of neutralizing by adding enzymes. can

And the dyeing step is a step of dyeing and drying the fabric that has passed through the dyeing pretreatment step in a dyeing or printing method, and the dyeing method is not greatly limited and can be dyed using various dyeing methods.

The cooling finishing agent preparation step is a step of preparing a cooling finishing agent for imparting semi-permanent initial cooling feeling and sustained cooling feeling to the fabric, and is a step of obtaining a cooling finishing agent obtained by mixing an aqueous solution of xylitol, an aqueous solution of chitosan, and an emulsion of menthol in water.

The xylitol aqueous solution is an aqueous solution obtained by dissolving xylitol having a cooling function in water, and it is preferable to use a 50% xylitol aqueous solution in order to effectively improve cooling properties without generating precipitates even with the passage of time.

The chitosan aqueous solution is an aqueous solution obtained by dissolving chitosan having cooling and antibacterial functions in water, and it is preferable to use a 5% chitosan aqueous solution in order to improve cooling properties without generating precipitates after dissolution. At this time, chitosan for dissolving in water is preferably used after adjusting the pH to 3.5 in citric acid and stirring at room temperature for 1 hour in order to improve stability such as not generating precipitate after time.

The menthol emulsion is an emulsion obtained by emulsifying menthol having cooling function in water using a surfactant. At this time, it is preferable to use Castor oil ethoxylate (EO 40) as the surfactant. In particular, the menthol emulsion has a high CP (cloud point), and in order to maintain a transparent state without layer separation, 25 parts by weight of menthol and 125 parts by weight of Castor oil ethoxylate (EO 40) are preferably mixed with 100 parts by weight of water.

In particular, the cooling agent is preferably mixed with 45 to 50 parts by weight of an aqueous solution of xylitol, 3 to 5 parts by weight of an aqueous solution of chitosan, and 2 to 3 parts by weight of an emulsion of menthol based on 100 parts by weight of water.

And, in order to improve washing resistance, it is preferable that the cooling finishing agent is mixed with 10 to 15 parts by weight of a cationic binder based on 100 parts by weight of the water. As the cationic binder, a cationic DADMAC resin, a cationic silicone resin, or a cationic urethane resin may be used.

Next, the processing mixture preparation step is a step for preparing a processing mixture solution capable of greatly improving not only the initial coolness and sustained coolness of the fabric, but also the tactile feel, and mixing the cooling processing agent with a silicone softener to obtain a processing mixture solution am.

As the silicone softener, it is preferable to use polyethylene glycol amino polysiloxane. When polyethylene glycol amino polysiloxane is used as the silicone softener, yellowing of the fabric does not occur and the touch and hygroscopicity can be greatly improved. In particular, in order to effectively improve touch and moisture absorption without causing yellowing of the fabric, it is preferable to prepare a processing mixture by mixing 20 to 30 parts by weight of the silicone softener with 100 parts by weight of the cooling processing agent.

Finally, the cold feeling processing step is a step of processing the cold feeling processing mixture on the fabric. The method of cooling the processing mixture to the fabric is not particularly limited, but it is preferable that the processing mixture is subjected to cooling processing by a pad-dry-curing method in order to secure an accurate pick-up rate on the fabric. good night.

Hereinafter, the manufacturing method of the cooling sensation fabric with improved cooling sensation and touch of the present invention will be described in detail with reference to examples, and the scope of the present invention is not limited to the following examples.

[manufacture of cooling agent]

In order to prepare xylitol, menthol, and chitosan, which are substances with cooling function, as cooling finishing agents that can be easily used in textile processing, the water-solubilization or emulsification process was tested as follows.

Xylitol is a pentose sugar and has five hydroxyl functional groups that can impart water solubility in its molecular structure, so it is easily soluble in water. Therefore, it is a method of observing storage stability after stirring and dissolving in water at maximum 50 ℃ for 1 hour. It was tested, and the results are shown in Table 1. And storage stability was evaluated by checking the presence of precipitation after 1 week.

Raw material Z-1 Z-2 Z-3 Z-4
xylitol
(weight%)
30
40
0
60
water
(weight%)
70
60
50
40
storage stability

stability
stability
stability
trace precipitation

As shown in Table 1, the concentration of xylitol was changed to 30, 40, 50, and 60%, and the water dissolution test was conducted. At the concentration of 60%, a small amount of precipitate occurred after 1 week, and the dissolved state was maintained up to 50%. Z-3 The storage stability of the xylitol aqueous solution was the best.

After purchasing the chitosan raw material, the pH was adjusted to 3.5 with citric acid, and the concentration of chitosan was changed as shown in Table 2 below to observe the state after dissolution, and the results are shown in Table 2.

Raw material C-1 C-2 C-3 C-4
chitosan
(weight%)
5
10
15
20
water
(weight%)
95
90
85
80
state after dissolution

yellow viscous liquid
large precipitation
large precipitation
large precipitation

As confirmed in Table 2, when the concentration of chitosan is 10%, 15%, or 20%, there is a concern that washing fastness, etc. may decrease as a large amount of chitosan is precipitated after dissolution, whereas at a concentration of 5% chitosan, C- The chitosan aqueous solution of 1 showed excellent storage stability, such as no precipitate after dissolution.

The chemical structure of menthol is in the form of an aliphatic ring and is insoluble in water but soluble in organic solvents. To apply to fibers, it must be emulsified using a surfactant before use in an aqueous system. In order to emulsify tall using a surfactant, experiments were conducted by changing the type of nonionic surfactant, the amount of nonionic surfactant, the type of anionic surfactant, and the amount of anionic surfactant.

Tridecyl alcohol ethoxylate EO 6 (M-1), Tridecyl alcohol ethoxylate EO 10 (M-2), Castor oil ethoxylate EO 12 (M-3), Castor oil ethoxylate EO 25 (M-4), Castor as nonionic surfactants Oil ethoxylate EO 40 (M-5), Hydrogenated castor oil ethoxylate EO 12 (M-6), and Hydrogenated castor oil ethoxylate EO 30 (M-7) were used, and the anionic surfactant was Alkyl (C _10-12 ) ethoxylate EO Emulsification tests were conducted using 5 phosphate (M-8), linear alkyl aryl sulfate (M-9), tristyrene phenol ethoxylate EO 12 sulfamate (M-10), tridecyl alcohol ethoxylate EO 6 phosphate (M-11), etc. .

First, after mixing 50% by weight of nonionic surfactants (M-1 to M-7) and anionic surfactants (M-8 to M-11) in 40% by weight of water and 10% by weight of menthol, respectively, at 35 ° C. After stirring for 1 hour, the state after dissolution was visually confirmed, and the results are shown in Table 3.

nonionic surfactant anionic surfactant M-1 M-2 M-3 M-4 M-5 M-6 M-7 M-8 M-9 M-10 M-11 Dissolution
after
situation translucent
liquid
floor separation Transparency
viscosity
liquid 35℃
at
opacity translucent
viscosity
liquid Transparency translucent
viscosity
liquid 35℃
at
opacity Transparency

viscosity pale yellow

viscosity pale yellow

viscosity milk white

viscosity

Nonionic surfactants M-1 and M-2 are tridecyl alcohol ethoxylate, a higher alcohol derivative of C ₁₃ , and in the case of nonionic surfactant M-1, layer separation occurred due to poor emulsion stability over time. In addition, nonionic surfactant M-2 has excellent emulsion stability, but it is undesirable to apply it to the last process, the processing process, because it has a unique alcohol scent of tridecyl alcohol.

Nonionic surfactants M-3 to M-5 are castor oil ethoxylated, triglycerides with three C18 alkyl chains, and are excellent emulsifiers for emulsifying hydrophobic substances of aliphatic structure because the alkyl chains are long. The nonionic surfactant M-3 showed a phenomenon in which the emulsion became cloudy at 35 ° C. This result is considered to be due to CP (Cloud point), which is one of the characteristics of nonionic surfactants. The emulsification state of the nonionic surfactant M-4 was found to be good, and in particular, the emulsification state of the nonionic surfactant M-5 was the best in a transparent state.

In addition, the anionic surfactants M-08 to M-11 all showed excellent emulsification stability, but overall, the emulsification performance was poorer than that of the nonionic surfactant M-5.

Next, the amount of menthol is fixed at 10% by weight, and the amount of nonionic surfactant M-5 is changed to 20% by weight, 30% by weight, 40% by weight and 50% by weight, mixed, and then 1 hour at 35 ° C. Stability was confirmed by visually checking the emulsification state immediately after sample preparation and after 7 days, and the results are shown in Table 4 below.

Nonionic surfactant M-5 (% by weight) 20 30 40 50 state after dissolution Transparency Transparency Transparency Transparency Status after 7 days floor separation Transparency Transparency Transparency

In the case of nonionic surfactant M-5, even at 30% by weight, layer separation did not occur after 7 days, and CP (cloud point) for each amount of emulsifier used increased as the amount of emulsifier used increased. % is determined as the optimal mixing amount.

A cooling finishing agent was prepared by mixing a menthol emulsion emulsified with xylitol aqueous solution Z-3, chitosan aqueous solution C-1, and nonionic surfactant M-5 in water as shown in Table 5 below. In addition, the appearance, pH, solid content and CP (℃) of the prepared cooling agent were measured, and the results are shown in Table 5.

Raw material S-1 S-2 Xylitol aqueous solution (Z-3) 30 30 Chitosan aqueous solution (C-1) 2.5 2.5 Menthol Emulsion (M-5) 1.0 1.5 water 66.5 66 Exterior light blue transparent light blue transparent pH 3.40 3.45 Solid content (%) 30.2 30.6 CP(℃) 52 46

When applying the cooling finishing agent to the fabric, the temperature of the tenta solution bath can rise to 40℃ in summer, and both S-1 and S-2 have high CPs of 46℃ or higher, making them suitable for textile application, and both have excellent product stability. did

Stability was tested using a cationic DADMAC resin, a cationic silicone resin, and a cationic urethane resin in order to impart washing durability to the cooling finishing agent. At this time, the cooling processing agent (S-2) was used as a cooling processing agent, and the stability of the crude liquid was tested using 80 g / l of the cooling processing agent and 30 g / l of the binder. As a result of the test, both the stability after crude liquid and the stability after 24 hours were excellent.

[Manufacture of processing mixture]

A processing mixture was prepared by mixing 25 parts by weight of polyethylene glycol amino polysiloxane as a silicone softener with 100 parts by weight of a cooling processing agent (S-2).

[Cool fabric manufacturing]

Using rayon 120d, cotton yarn 40's, and spandex yarn 20d, the fabric was woven by knitting into a 12 * 3 single changeable weave. At this time, rayon, cotton yarn and spandex yarn were mixed and knitted at a ratio of 72:23:5.

Then, the fabric was bleached by adding 4% hydrogen peroxide, 3% caustic soda, 2% stabilizer and other refining agents, pH was adjusted by adding 0.3 g/L of glacial acetic acid, and 1 g/L of enzyme was added to neutralize, pre-treatment for dyeing and then dried.

Next, cooling processing was performed with a 6 Chamber Steam Tenter at a speed of 10 m/min at 160 ° C using the Pad-Dry-Curing method while the cooling processing agent (S-2) alone or processing mixture was added to the tenta solution bath.

[Washing shrinkage test]

For the cooling fabric processed using the cooling processing agent, the washing shrinkage (%) was measured in the state of the dough, after pretreatment and drying, and after the cooling processing tenta, and the results are shown in Table 6.

width
gr/yd
r/m2 Washing shrinkage rate (%)
length width raw 72 251.7 150.7 33 17.0 Pretreatment
after drying 52 215.5 1787 1.7 -3.3 cold processing
after tenter 58 239.0 167.5 0.0 2.0

As confirmed in Table 7, in the case of the cooling fabric after cooling treatment tenta, the washing shrinkage rate was excellent, such as measured as very low as 0.0% in the longitudinal direction and 2.0% in the width direction.

[Test of contact cooling of cooling fabric]

Contact cooling (Q-max), sustained cooling (clo), dimensional change rate (%), washing fastness, tensile strength and elongation of the cooling fabric processed using the cooling processing agent were analyzed, and the results are shown in Table 7. showed up

Test Items

result
Test Items
result coldness to the touch
(Q-max) 0.172
dimensional change rate
(%) wale -0.5 course -4.0 Sustained cooling sensation
(clo) 0.182
Color fastness to washing
(class) 4 to 5
tensile strength MD 134.32 Shinto MD 80.19 CD 106.40 CD 140.54

As confirmed in Table 7, the cooling-feeling fabric was excellent in contact cooling feeling and sustained cooling feeling, excellent in dimensional change rate and washing fastness, and physical properties such as tensile strength and elongation were also measured to be high.

[Test of yellowing, hygroscopicity and tactile performance of cooling fabric]

In the cooling fabric manufacturing step, the cooling processing agent (S-2) alone and the processing mixture were tested for yellowing, hygroscopicity and tactile performance of the cooling fabric, respectively, and the results are shown in Table 8.

Raw material
yellowing
hygroscopicity
tactile performance Cooling agent
(parts by weight) silicone softener
(parts by weight) Cooling agent alone 100 - 0.12 2 * processing mixture 100 25 0.12 2 ***

As confirmed in Table 8, in the case of the fabric treated with the cooling processing agent alone, yellowing did not occur and the hygroscopicity was excellent, but the tactile performance was poor, while the processing mixture mixed with the cooling processing agent and the silicone softener was used. It can be seen that in the case of the fabric subjected to the cooling treatment, yellowing does not occur, hygroscopicity is excellent, and tactile performance is greatly improved.

Claims (9)

a) weaving a fabric using rayon and cotton yarn;
b) pre-treating the fabric for dyeing;
c) dyeing and drying the fabric;
d) obtaining a cooling finishing agent by mixing 45 to 50 parts by weight of an aqueous solution of xylitol, 3 to 5 parts by weight of an aqueous solution of chitosan, 2 to 3 parts by weight of a menthol emulsion, and 10 to 15 parts by weight of a cationic binder with respect to 100 parts by weight of water;
e) obtaining a processing mixture by mixing a silicone softener made of polyethylene glycol amino polysiloxane with the cooling processing agent;
A method for manufacturing a cooling fabric with improved cooling sensation and tactile sensation, characterized in that it comprises a;
According to claim 1,
A method of manufacturing a cooling fabric with improved cooling sensation and touch, characterized in that in step a), the fabric is woven by mixing 100 parts by weight of rayon with 30 to 50 parts by weight of cotton yarn.
According to claim 1,
In step a), fabric is woven using rayon, cotton yarn and spandex yarn, and 30 to 50 parts by weight of cotton yarn and 5 to 10 parts by weight of spandex yarn are mixed with 100 parts by weight of rayon. Manufacturing method of fabric.
According to claim 1,
Step a) is a method of manufacturing a cooling fabric with improved cooling and tactile sensation, characterized in that the fabric is weaved by knitting the cotton yarn to form the surface structure and the rayon to form the back surface structure.
According to claim 1,
In step e), 20 to 30 parts by weight of the silicone softener is mixed with 100 parts by weight of the cooling feeling processing agent to obtain a processing mixture.
A cooling fabric with improved cooling sensation and tactile sensation, characterized in that it is manufactured by the manufacturing method of any one of claims 1 to 5. delete delete delete